The invention discloses a domestic permanent magnetic gas timing valve. The domestic permanent magnetic gas timing valve comprises a permanent magnetic valve body part and a mechanical part, wherein the permanent magnetic valve body part comprises a valve body, an outer permanent magnetic ring, a return spring, a front end cover, a piston, a rubber ring and a piston permanent magnetic ring; the mechanical part comprises a bracket, a valve opening mechanism and a valve closing keeping mechanism; the valve opening mechanism comprises a circular drive plate, an opening linkage arm, a shifting fork and a locating pin; the valve closing keeping mechanism comprises a circular concave disc, a lock bump, a locating bolt, a retaining spring, a retaining linkage arm, a lock column, a mechanical timer and a main shaft; the retaining linkage arm and the opening linkage arm are mounted on the outer permanent magnetic ring; the shifting fork is connected with the opening linkage arm; the lock column is fixed on the retaining linkage arm; the circular drive plate and the circular concave disc are fixed on the main shaft; the mechanical timer is connected with the main shaft. The domestic permanent magnetic gas timing valve disclosed by the invention can be automatically closed within a preset time; the permanent magnetic ring on the outer side of the valve body can be used for driving the permanent magnetic ring piston on the inner side of the valve body to realize the opening and closing function so as to ensure that no leakage of gas in the valve body is caused.